Safety elevator device.



S. KENYERES.

SAFETY ELEVATOR DEVICE. APPLIUATION FILED 1111.6, 1911.

1,003,050, Patented sepa-12, 1911.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH C0.. WASHINGTON. D4 c. 2

S. KENYERES.

SAFETY ELBVATOR DEVICE. APPLICATION FILED*JAN.6,1911

Patented Sept. 12,1911.

2 SHEETS-SHEET 2.

COLUMBIA PLANuuRAPH C0..wASmNnr0N. D. c.

STEVE KENYERES, OF TOLEDO, OHIO.

sArETY'ELEvAToE DEVICE.

Specification of Letters Patent.

Patented Sept. 12, 1911.

Application filed January 6, 1911. Serial No. 601,179.

To all whom it may concern."

Be it known that I, STEVE KENYERES, a subject of the King of Hungary, residing at Tol-edo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Safety Elevator Devices, of which the following is a specification,

, reference being' had therein to the accompanying drawing.

This invention relates to safety elevator' devices, and the objects of my invention are to furnish an elevator with a safety device that will positively hold the elevator cage irrespective of the hoisting cables, the device being arranged whereby the cage cannot be lowered until the device is released.

Another object of the invention is to provide an elevator looking mechanism' that can be easily and quickly released to hold an elevator should the hoisting` cables thereof break. l

A further object of the invention is to provide a mechanism of the above type that is simple in construction, durable, applicable to various types of elevator cages and efficient for the purposes for which it is intended.

I attain the above objects by a mechanical construction that will be hereinafter specifically described and then claimed, and reference will now be had to the drawings, wherein like numerals of reference indicate corresponding parts throughout the several views, in which:

Figure 1 is a vertical sectional view of an elevator cage provided with the safety device. Fig. 2 is a bottom plan of the same partly broken away and partly in section. Fig. 3 is a cross sectional view taken on the line III-111 of Fig. 2 showing the actuating mechanism thereof in an extended or locked position. Fig. 4 is a similar view of the mechanism in a retracted or unlocked position, and Fig. 5 is an enlarged detail and 9 provided with meshing gear wheels 10. The shaft 9 has one end thereof provided with a crank 11 and engaging the upper side of said crank is a pin 12 extending upwardly through the floor 2 and supporting' the pivoted ends 13 of a treadle or pedal 14 pivotally mounted upon the floor 2, as at 15. The treadle or pedal 14 is normally retained in engagement with the upper end of the pin 12 by a retractile spring 16 connected to the under side of the pedal with the lower end of said spring mounted in a socket 17 provided therefor in the floor 2.

The shafts 8 and 9 are provided with cranks 18 and 19 adjacent to the gear wheels 10 and connected to these cranks are cables 20 and 21 respectively passing over sheaves 22 and 23 revolubly supported by depending bearings 24. The cables 20 and 21 have the ends thereof connected to the reduced eyelet ends 25 of pawls 26 having beveled ends 27 adapted to ride over the ratchet teeth 6 of the frames 1, said pawls being slidably mounted in depending brackets 28 provided therefor upon the bottom of the floor 2, and said pawls are normally retained in engagement with the ratchet teeth 6 by compression springs 29 encircling the reduced ends 25 of the pawls between the bracket 28 and the rear end of the pawl 26.

The tension of the springs 29 is sufficient to hold the pawls in engagement with the frames 1 and prevent the elevator cage from moving downwardly between said frames. When it is desired to lower the elevator cage, the operator of the cage presses upon the treadle or pedal 14, which through the medium of the pin 12 and the large crank 11 of the shaft 9 causes said shaft to rot-ate and this shaft through the medium of the gear wheels 10 moves the shafts 8 and 9 sufliciently to pull upon the cables 20 and 21, withdraw the pawls 26 eut of engagement with the ratchet teeth 6, and place the compression springs 29 under tension. As long as the treadle or pedal 14 is depressed by the operator the elevator cage can be lowered, but should it be desired to suddenly stop the same, as would be necessaid cage, meshing gear wheels carried by said shafts-and adapted to move said shafts in unison, revoluble sheaves carried by the bottom yof the floor of said cage, springpressed pawls movably mounted upon the bottom of the Hoor of said cage and adapted to normally engage the teeth of said frames, cables attached to said pawls and passing over said sheaves and having the ends there- 4 of connected to said shafts whereby when said sheaves are moved said pawls will be withdrawn from engagement with said frames, a crank carried by one of said i shafts, a pin extending through the iioor of said cage t-o engage said crank, and a pivoted pedal arranged upon the floor of said cage and adapted to engage said pin, substantially as described.

2. In a safety elevator device, the combination with guide frames, and a cage movable between said frames, of spring-pressed n movable pawls carried by the bottom of said cage and adapted to normally engage said frames, revoluble shafts supported by the bottom of said cage and adapted to be moved in unison, cables attached to said pawls and adapted to be moved by a movement of said shafts to shift said pawls outI of engagement with said frames, a crank carried by one of said shafts, and means including a pedal carried by said cage and adapted to move said crank, substantially as and for the purpose herein described.

In testimony whereof I aiX my signature in the presence of two witnesses.

STEVE KENYERES.

Witnesses JULIUs P. SIMON, E. VoLKs.

Copies of this patent may be obtained for ve'cents each, by addressing the Commissioner of Iatents,

Washington, D. C. 

